1 answer:
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Answer:
Step-by-step explanation:
2 = 2 × 1
6 = 2 × 3
GCF = 2
<h3>Answer: Choice D. 
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This is because we want to avoid having negative numbers under the square root. So we make the radicand to be 0 or larger.
The +1 at the end doesn't affect the domain.